Distribution of early and middle Jurassic tar-rich coal and its geological controls in Northern Xinjiang

• Published in: Méitàn kēxué jìshù Vol. 52; no. 1; pp. 244 - 254
• Main Authors: Shuzheng NING, Li ZHANG, Xiaotao XU, Jianqiang ZHANG, Zhuo ZOU
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Coal Science and Technology 01.01.2024
• Subjects: coal maceral; coalification degree; hydrogen rich vitrinite; ratio of vitrinite and inertinite; tar yield; tar-rich coal
• ISSN: 0253-2336
• DOI: 10.12438/cst.2023–0638

The tar-rich coal resources in northern Xinjiang are rich, accounting for about half of the country's tar-rich coal. The rational development and utilization of tar-rich coal resources in this region is an important supplement to Chinese coal resources for coal-to-oil and gas. Previous studies on coal resources in this area have ignored their oil and gas resource attributes, and the characteristics and genetic laws of tar-rich coal are unclear. On the basis of systematically collecting the geological data of tar-rich coal in the six coal bearing belts of Northern Xinjiang, 137 groups of samples were collected and tested, the occurrence characteristics of early and middle Jurassic tar-rich coal was analyzed, and the geological controls of tar-rich coal were further discussed. The tar yield in the northeastern, western and central parts of northern Xinjiang was relatively high, while the high-oil coal was distributed in discontinuous bands in the Badaowan Formation in the northeast region. According to the tar